The Blue Blazer was invented by Jerry Thomas while he worked at the El Dorado in San Francisco. It might not be the earliest known heated alcoholic beverage but it's preparation is very unique. This version is essentially a Hot Toddy done Blue Blazer style. After a few practice rounds, (BE CAREFUL!) this is a great drink to bring behind the bar or to impress your friends at home. Don't forget to make your Old Fashioned Simple Syrup first.
add boiling water to one of two large metal or ceramic mugs
add remaining ingredients to the second mug and ignite with fire
slowly begin rolling the alcoholic ingredients and the water back and forth from mug to mug
as you roll the drink, position your mugs and farther and farther apart vertically to increase the length of the flame
once thoroughly mixed, add cinnamon and quickly cap one mug with the other to snuff the flame
serve in a goblet or snifter with a slice of lemon